Practical plan to reduce the risk of reducer box rupture through routine maintenance
1. Strictly control lubrication management to avoid dry grinding and high temperature expansion and cracking
Regular inspection of oil level: Check the oil level of the sight glass every day and keep it at the center line of the standard scale; prevent dry grinding due to lack of oil (internal gears and bearings are sintered at high temperatures, and the shell expands and cracks due to heat), and excessive oil injection (excessive internal pressure, cracking of end cover and box joints).
Oil matching + regular oil change: Select the original factory-specified gear oil according to the working conditions, and shorten the oil change cycle in high-temperature/dusty and heavy-load environments; avoid mixing inferior oil and deteriorated oil to prevent oil film failure from causing internal overheating, component jamming and cracking of the box.
Unblock the breather valve regularly: Clean the breather cap/ventilator valve of the reducer every week to prevent blockage, which may lead to poor heat dissipation and exhaust in the box, high pressure, and long-term high pressure to crack the welds and weak parts of the box.
2. Fastening and sealing maintenance to prevent loosening and cracking due to external force
Bolt tightening in stages: Retighten the box connecting bolts and anchor bolts 1 month after new machine/overhaul; conduct quarterly comprehensive inspections and tighten evenly and diagonally according to standard torque. It is strictly forbidden to use excessive force on a single bolt to cause stress cracking of the box.
Sealing and anti-leakage protection: If oil seals and gaskets are leaking, replace them in time to avoid high temperatures caused by oil leakage and oil shortage; prevent rain and dust from penetrating into the box, causing internal corrosion and jamming, and indirectly causing internal stress to crack the shell.
3. Working conditions and vibration control to reduce impact fatigue crack damage
Overloading and frequent starts and stops are strictly prohibited: daily management and control prevents long-term overloading of equipment, hard starts with materials, and frequent switching of forward and reverse driving. Instantaneous impact loads will cause fatigue cracks in the box, which will gradually expand to rupture.
Regularly monitor vibration and abnormal noise: listen to the operating noise every day, and measure the vibration value of the fuselage every month. If there is abnormal impact sound or excessive vibration, stop the machine in time to check for gear chipping, bearing locking, eccentric jamming, and avoid internal components from getting stuck and cracking the box.
Correct the coaxiality and installation level: Review the coaxiality of the motor and reducer and the installation level of the equipment every six months. Excessive deviation will produce radial pulling force and torsion, which will tear the base and shell of the box for a long time, causing cracks in the base and shell.
4. Environmental and anti-corrosion protection, delaying the deterioration of the shell material
Targeted protection in harsh environments: Install a protective cover at sites of dust, moisture, acid and alkali corrosion; regularly clean dust and oil on the surface of the box to prevent local high temperatures due to poor heat dissipation, and avoid corrosive media from corroding the shell from becoming thin and brittle.
Preheating in advance for low-temperature environments: In extremely cold conditions in winter, low-speed no-load preheating is required before starting the machine to prevent the shell material from becoming brittle at low temperatures and directly cracking under load impact.
